diff --git a/homeassistant/components/deconz/deconz_device.py b/homeassistant/components/deconz/deconz_device.py
index 0ddabbcfccc..8551ad33cf5 100644
--- a/homeassistant/components/deconz/deconz_device.py
+++ b/homeassistant/components/deconz/deconz_device.py
@@ -2,8 +2,6 @@
 
 from __future__ import annotations
 
-from typing import Generic, TypeVar
-
 from pydeconz.models.deconz_device import DeconzDevice as PydeconzDevice
 from pydeconz.models.group import Group as PydeconzGroup
 from pydeconz.models.light import LightBase as PydeconzLightBase
@@ -19,13 +17,12 @@ from .const import DOMAIN as DECONZ_DOMAIN
 from .hub import DeconzHub
 from .util import serial_from_unique_id
 
-_DeviceT = TypeVar(
-    "_DeviceT",
-    bound=PydeconzGroup | PydeconzLightBase | PydeconzSensorBase | PydeconzScene,
+type _DeviceType = (
+    PydeconzGroup | PydeconzLightBase | PydeconzSensorBase | PydeconzScene
 )
 
 
-class DeconzBase(Generic[_DeviceT]):
+class DeconzBase[_DeviceT: _DeviceType]:
     """Common base for deconz entities and events."""
 
     unique_id_suffix: str | None = None
@@ -71,7 +68,7 @@ class DeconzBase(Generic[_DeviceT]):
         )
 
 
-class DeconzDevice(DeconzBase[_DeviceT], Entity):
+class DeconzDevice[_DeviceT: _DeviceType](DeconzBase[_DeviceT], Entity):
     """Representation of a deCONZ device."""
 
     _attr_should_poll = False
diff --git a/homeassistant/components/devolo_home_network/entity.py b/homeassistant/components/devolo_home_network/entity.py
index 3f18746e08d..e77c3f60803 100644
--- a/homeassistant/components/devolo_home_network/entity.py
+++ b/homeassistant/components/devolo_home_network/entity.py
@@ -2,8 +2,6 @@
 
 from __future__ import annotations
 
-from typing import TypeVar
-
 from devolo_plc_api.device_api import (
     ConnectedStationInfo,
     NeighborAPInfo,
@@ -21,16 +19,13 @@ from homeassistant.helpers.update_coordinator import (
 from . import DevoloHomeNetworkConfigEntry
 from .const import DOMAIN
 
-_DataT = TypeVar(
-    "_DataT",
-    bound=(
-        LogicalNetwork
-        | DataRate
-        | list[ConnectedStationInfo]
-        | list[NeighborAPInfo]
-        | WifiGuestAccessGet
-        | bool
-    ),
+type _DataType = (
+    LogicalNetwork
+    | DataRate
+    | list[ConnectedStationInfo]
+    | list[NeighborAPInfo]
+    | WifiGuestAccessGet
+    | bool
 )
 
 
@@ -62,7 +57,7 @@ class DevoloEntity(Entity):
         )
 
 
-class DevoloCoordinatorEntity(
+class DevoloCoordinatorEntity[_DataT: _DataType](
     CoordinatorEntity[DataUpdateCoordinator[_DataT]], DevoloEntity
 ):
     """Representation of a coordinated devolo home network device."""
diff --git a/homeassistant/components/sleepiq/entity.py b/homeassistant/components/sleepiq/entity.py
index 3ffd736ccda..829e3a00e6f 100644
--- a/homeassistant/components/sleepiq/entity.py
+++ b/homeassistant/components/sleepiq/entity.py
@@ -1,7 +1,6 @@
 """Entity for the SleepIQ integration."""
 
 from abc import abstractmethod
-from typing import TypeVar
 
 from asyncsleepiq import SleepIQBed, SleepIQSleeper
 
@@ -14,10 +13,7 @@ from homeassistant.helpers.update_coordinator import CoordinatorEntity
 from .const import ENTITY_TYPES, ICON_OCCUPIED
 from .coordinator import SleepIQDataUpdateCoordinator, SleepIQPauseUpdateCoordinator
 
-_SleepIQCoordinatorT = TypeVar(
-    "_SleepIQCoordinatorT",
-    bound=SleepIQDataUpdateCoordinator | SleepIQPauseUpdateCoordinator,
-)
+type _DataCoordinatorType = SleepIQDataUpdateCoordinator | SleepIQPauseUpdateCoordinator
 
 
 def device_from_bed(bed: SleepIQBed) -> DeviceInfo:
@@ -47,7 +43,9 @@ class SleepIQEntity(Entity):
         self._attr_device_info = device_from_bed(bed)
 
 
-class SleepIQBedEntity(CoordinatorEntity[_SleepIQCoordinatorT]):
+class SleepIQBedEntity[_SleepIQCoordinatorT: _DataCoordinatorType](
+    CoordinatorEntity[_SleepIQCoordinatorT]
+):
     """Implementation of a SleepIQ sensor."""
 
     _attr_icon = ICON_OCCUPIED
@@ -75,7 +73,9 @@ class SleepIQBedEntity(CoordinatorEntity[_SleepIQCoordinatorT]):
         """Update sensor attributes."""
 
 
-class SleepIQSleeperEntity(SleepIQBedEntity[_SleepIQCoordinatorT]):
+class SleepIQSleeperEntity[_SleepIQCoordinatorT: _DataCoordinatorType](
+    SleepIQBedEntity[_SleepIQCoordinatorT]
+):
     """Implementation of a SleepIQ sensor."""
 
     _attr_icon = ICON_OCCUPIED
diff --git a/homeassistant/components/switchbee/entity.py b/homeassistant/components/switchbee/entity.py
index c601324b2a5..893f052c8a0 100644
--- a/homeassistant/components/switchbee/entity.py
+++ b/homeassistant/components/switchbee/entity.py
@@ -1,7 +1,7 @@
 """Support for SwitchBee entity."""
 
 import logging
-from typing import Generic, TypeVar, cast
+from typing import cast
 
 from switchbee import SWITCHBEE_BRAND
 from switchbee.device import DeviceType, SwitchBeeBaseDevice
@@ -12,13 +12,12 @@ from homeassistant.helpers.update_coordinator import CoordinatorEntity
 from .const import DOMAIN
 from .coordinator import SwitchBeeCoordinator
 
-_DeviceTypeT = TypeVar("_DeviceTypeT", bound=SwitchBeeBaseDevice)
-
-
 _LOGGER = logging.getLogger(__name__)
 
 
-class SwitchBeeEntity(CoordinatorEntity[SwitchBeeCoordinator], Generic[_DeviceTypeT]):
+class SwitchBeeEntity[_DeviceTypeT: SwitchBeeBaseDevice](
+    CoordinatorEntity[SwitchBeeCoordinator]
+):
     """Representation of a Switchbee entity."""
 
     _attr_has_entity_name = True
@@ -35,7 +34,9 @@ class SwitchBeeEntity(CoordinatorEntity[SwitchBeeCoordinator], Generic[_DeviceTy
         self._attr_unique_id = f"{coordinator.unique_id}-{device.id}"
 
 
-class SwitchBeeDeviceEntity(SwitchBeeEntity[_DeviceTypeT]):
+class SwitchBeeDeviceEntity[_DeviceTypeT: SwitchBeeBaseDevice](
+    SwitchBeeEntity[_DeviceTypeT]
+):
     """Representation of a Switchbee device entity."""
 
     def __init__(
diff --git a/homeassistant/components/zha/core/decorators.py b/homeassistant/components/zha/core/decorators.py
index b8e15024811..d20fb7f2a38 100644
--- a/homeassistant/components/zha/core/decorators.py
+++ b/homeassistant/components/zha/core/decorators.py
@@ -3,12 +3,10 @@
 from __future__ import annotations
 
 from collections.abc import Callable
-from typing import Any, TypeVar
-
-_TypeT = TypeVar("_TypeT", bound=type[Any])
+from typing import Any
 
 
-class DictRegistry(dict[int | str, _TypeT]):
+class DictRegistry[_TypeT: type[Any]](dict[int | str, _TypeT]):
     """Dict Registry of items."""
 
     def register(self, name: int | str) -> Callable[[_TypeT], _TypeT]:
@@ -22,7 +20,9 @@ class DictRegistry(dict[int | str, _TypeT]):
         return decorator
 
 
-class NestedDictRegistry(dict[int | str, dict[int | str | None, _TypeT]]):
+class NestedDictRegistry[_TypeT: type[Any]](
+    dict[int | str, dict[int | str | None, _TypeT]]
+):
     """Dict Registry of multiple items per key."""
 
     def register(
@@ -43,7 +43,9 @@ class NestedDictRegistry(dict[int | str, dict[int | str | None, _TypeT]]):
 class SetRegistry(set[int | str]):
     """Set Registry of items."""
 
-    def register(self, name: int | str) -> Callable[[_TypeT], _TypeT]:
+    def register[_TypeT: type[Any]](
+        self, name: int | str
+    ) -> Callable[[_TypeT], _TypeT]:
         """Return decorator to register item with a specific name."""
 
         def decorator(cluster_handler: _TypeT) -> _TypeT:
diff --git a/homeassistant/components/zha/core/registries.py b/homeassistant/components/zha/core/registries.py
index b9110a8dcde..9d23b77efaa 100644
--- a/homeassistant/components/zha/core/registries.py
+++ b/homeassistant/components/zha/core/registries.py
@@ -6,7 +6,7 @@ import collections
 from collections.abc import Callable
 import dataclasses
 from operator import attrgetter
-from typing import TYPE_CHECKING, TypeVar
+from typing import TYPE_CHECKING
 
 import attr
 from zigpy import zcl
@@ -23,9 +23,6 @@ if TYPE_CHECKING:
     from .cluster_handlers import ClientClusterHandler, ClusterHandler
 
 
-_ZhaEntityT = TypeVar("_ZhaEntityT", bound=type["ZhaEntity"])
-_ZhaGroupEntityT = TypeVar("_ZhaGroupEntityT", bound=type["ZhaGroupEntity"])
-
 GROUP_ENTITY_DOMAINS = [Platform.LIGHT, Platform.SWITCH, Platform.FAN]
 
 IKEA_AIR_PURIFIER_CLUSTER = 0xFC7D
@@ -387,7 +384,7 @@ class ZHAEntityRegistry:
         """Match a ZHA group to a ZHA Entity class."""
         return self._group_registry.get(component)
 
-    def strict_match(
+    def strict_match[_ZhaEntityT: type[ZhaEntity]](
         self,
         component: Platform,
         cluster_handler_names: set[str] | str | None = None,
@@ -418,7 +415,7 @@ class ZHAEntityRegistry:
 
         return decorator
 
-    def multipass_match(
+    def multipass_match[_ZhaEntityT: type[ZhaEntity]](
         self,
         component: Platform,
         cluster_handler_names: set[str] | str | None = None,
@@ -453,7 +450,7 @@ class ZHAEntityRegistry:
 
         return decorator
 
-    def config_diagnostic_match(
+    def config_diagnostic_match[_ZhaEntityT: type[ZhaEntity]](
         self,
         component: Platform,
         cluster_handler_names: set[str] | str | None = None,
@@ -488,7 +485,7 @@ class ZHAEntityRegistry:
 
         return decorator
 
-    def group_match(
+    def group_match[_ZhaGroupEntityT: type[ZhaGroupEntity]](
         self, component: Platform
     ) -> Callable[[_ZhaGroupEntityT], _ZhaGroupEntityT]:
         """Decorate a group match rule."""
diff --git a/homeassistant/helpers/collection.py b/homeassistant/helpers/collection.py
index da6d3d65b54..c69295ed1b1 100644
--- a/homeassistant/helpers/collection.py
+++ b/homeassistant/helpers/collection.py
@@ -35,9 +35,6 @@ CHANGE_ADDED = "added"
 CHANGE_UPDATED = "updated"
 CHANGE_REMOVED = "removed"
 
-_ItemT = TypeVar("_ItemT")
-_StoreT = TypeVar("_StoreT", bound="SerializedStorageCollection")
-_StorageCollectionT = TypeVar("_StorageCollectionT", bound="StorageCollection")
 _EntityT = TypeVar("_EntityT", bound=Entity, default=Entity)
 
 
@@ -129,7 +126,7 @@ class CollectionEntity(Entity):
         """Handle updated configuration."""
 
 
-class ObservableCollection(ABC, Generic[_ItemT]):
+class ObservableCollection[_ItemT](ABC):
     """Base collection type that can be observed."""
 
     def __init__(self, id_manager: IDManager | None) -> None:
@@ -236,7 +233,9 @@ class SerializedStorageCollection(TypedDict):
     items: list[dict[str, Any]]
 
 
-class StorageCollection(ObservableCollection[_ItemT], Generic[_ItemT, _StoreT]):
+class StorageCollection[_ItemT, _StoreT: SerializedStorageCollection](
+    ObservableCollection[_ItemT]
+):
     """Offer a CRUD interface on top of JSON storage."""
 
     def __init__(
@@ -512,7 +511,7 @@ def sync_entity_lifecycle(
     ).async_setup()
 
 
-class StorageCollectionWebsocket(Generic[_StorageCollectionT]):
+class StorageCollectionWebsocket[_StorageCollectionT: StorageCollection]:
     """Class to expose storage collection management over websocket."""
 
     def __init__(
diff --git a/homeassistant/helpers/storage.py b/homeassistant/helpers/storage.py
index 43540578429..dabd7ded21f 100644
--- a/homeassistant/helpers/storage.py
+++ b/homeassistant/helpers/storage.py
@@ -12,7 +12,7 @@ from json import JSONDecodeError, JSONEncoder
 import logging
 import os
 from pathlib import Path
-from typing import Any, Generic, TypeVar
+from typing import Any
 
 from homeassistant.const import (
     EVENT_HOMEASSISTANT_FINAL_WRITE,
@@ -48,11 +48,9 @@ STORAGE_MANAGER: HassKey[_StoreManager] = HassKey("storage_manager")
 
 MANAGER_CLEANUP_DELAY = 60
 
-_T = TypeVar("_T", bound=Mapping[str, Any] | Sequence[Any])
-
 
 @bind_hass
-async def async_migrator(
+async def async_migrator[_T: Mapping[str, Any] | Sequence[Any]](
     hass: HomeAssistant,
     old_path: str,
     store: Store[_T],
@@ -229,7 +227,7 @@ class _StoreManager:
 
 
 @bind_hass
-class Store(Generic[_T]):
+class Store[_T: Mapping[str, Any] | Sequence[Any]]:
     """Class to help storing data."""
 
     def __init__(
diff --git a/homeassistant/helpers/update_coordinator.py b/homeassistant/helpers/update_coordinator.py
index ab635840b73..f89ba98181c 100644
--- a/homeassistant/helpers/update_coordinator.py
+++ b/homeassistant/helpers/update_coordinator.py
@@ -33,9 +33,6 @@ REQUEST_REFRESH_DEFAULT_COOLDOWN = 10
 REQUEST_REFRESH_DEFAULT_IMMEDIATE = True
 
 _DataT = TypeVar("_DataT", default=dict[str, Any])
-_BaseDataUpdateCoordinatorT = TypeVar(
-    "_BaseDataUpdateCoordinatorT", bound="BaseDataUpdateCoordinatorProtocol"
-)
 _DataUpdateCoordinatorT = TypeVar(
     "_DataUpdateCoordinatorT",
     bound="DataUpdateCoordinator[Any]",
@@ -462,7 +459,9 @@ class TimestampDataUpdateCoordinator(DataUpdateCoordinator[_DataT]):
             self.last_update_success_time = utcnow()
 
 
-class BaseCoordinatorEntity(entity.Entity, Generic[_BaseDataUpdateCoordinatorT]):
+class BaseCoordinatorEntity[
+    _BaseDataUpdateCoordinatorT: BaseDataUpdateCoordinatorProtocol
+](entity.Entity):
     """Base class for all Coordinator entities."""
 
     def __init__(
diff --git a/homeassistant/util/enum.py b/homeassistant/util/enum.py
index 728cd3cdf7f..f29812c7984 100644
--- a/homeassistant/util/enum.py
+++ b/homeassistant/util/enum.py
@@ -3,13 +3,12 @@
 from collections.abc import Callable
 import contextlib
 from enum import Enum
-from typing import TYPE_CHECKING, Any, TypeVar
+from typing import TYPE_CHECKING, Any
 
 # https://github.com/python/mypy/issues/5107
 if TYPE_CHECKING:
-    _LruCacheT = TypeVar("_LruCacheT", bound=Callable)
 
-    def lru_cache(func: _LruCacheT) -> _LruCacheT:
+    def lru_cache[_T: Callable[..., Any]](func: _T) -> _T:
         """Stub for lru_cache."""
 
 else: